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通过对塔城市某化工厂场地工程地质条件的分析,明确了该厂地表的第二层黄土和第三层黄土(最深处约为6米)局部具有湿陷性。考虑到上层建筑物承载力的要求,需要对此进行处理。通过技术经济评估,优选强夯法处理此湿陷性黄土地基,讨论了强夯法设计参数的确定,主要包括夯击能、夯点击数和含水率等。通过对此项目进行强夯施工及施工后的检验,验证了强夯法的可行性。
Through the analysis of engineering geological conditions of a chemical plant site in Tacheng City, it is clear that the second and third layers of loess at the surface of the plant (with the depth of about 6 meters) are locally collapsible. Taking into account the requirements of the bearing capacity of superstructure, this needs to be dealt with. Through technical and economic evaluation, the dynamic compaction method was adopted to treat the collapsible loess foundation. The design parameters of dynamic compaction method were discussed, including the impact energy, the number of hits and the moisture content. Through the rammer construction and post-construction inspection of this project, the feasibility of dynamic compaction method was verified.